2003-12-04  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpimage-projection.c (gimp_image_projection_allocate):
	optimized to reallocate the projection TileManager only if it does
	not match the required width, height and depth.

	* app/core/gimpimage.c (gimp_image_size_changed): call
	gimp_image_projection_allocate().

	* app/core/gimpimage-crop.c
	* app/core/gimpimage-resize.c
	* app/core/gimpimage-rotate.c
	* app/core/gimpimage-scale.c
	* app/core/gimpimage-undo-push.c: removed calls to
	gimp_image_projection_allocate(), since "size_changed" does it
	automatically now.